phpmyadmin/libraries/db_table_exists.lib.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4  * Ensure the database and the table exist (else move to the "parent" script)
   5  * and display headers
   6  *
   7  * @package PhpMyAdmin
   8  */
   9 if (! defined('PHPMYADMIN')) {
  10     exit;
  11 }
  12
  13 if (empty($is_db)) {
  14     if (strlen($db)) {
  15         $is_db = @PMA_DBI_select_db($db);
  16     } else {
  17         $is_db = false;
  18     }
  19
  20     if (! $is_db) {
  21         // not a valid db name -> back to the welcome page
  22         if (! defined('IS_TRANSFORMATION_WRAPPER')) {
  23             $response = PMA_Response::getInstance();
  24             if ($response->isAjax()) {
  25                 $response->isSuccess(false);
  26                 $response->addJSON(
  27                     'message',
  28                     PMA_Message::error(__('No databases selected.'))
  29                 );
  30             } else {
  31                 $url_params = array('reload' => 1);
  32                 if (isset($message)) {
  33                     $url_params['message'] = $message;
  34                 }
  35                 if (! empty($sql_query)) {
  36                     $url_params['sql_query'] = $sql_query;
  37                 }
  38                 if (isset($show_as_php)) {
  39                     $url_params['show_as_php'] = $show_as_php;
  40                 }
  41                 PMA_sendHeaderLocation(
  42                     $cfg['PmaAbsoluteUri'] . 'index.php'
  43                     . PMA_generate_common_url($url_params, '&')
  44                 );
  45             }
  46             exit;
  47         }
  48     }
  49 } // end if (ensures db exists)
  50
  51 if (empty($is_table)
  52     && !defined('PMA_SUBMIT_MULT')
  53     && ! defined('TABLE_MAY_BE_ABSENT')
  54 ) {
  55     // Not a valid table name -> back to the db_sql.php
  56
  57     if (strlen($table)) {
  58         $is_table = isset(PMA_Table::$cache[$db][$table]);
  59
  60         if (! $is_table) {
  61             $_result = PMA_DBI_try_query(
  62                 'SHOW TABLES LIKE \'' . PMA_Util::sqlAddSlashes($table, true) . '\';',
  63                 null, PMA_DBI_QUERY_STORE
  64             );
  65             $is_table = @PMA_DBI_num_rows($_result);
  66             PMA_DBI_free_result($_result);
  67         }
  68     } else {
  69         $is_table = false;
  70     }
  71
  72     if (! $is_table) {
  73         if (! defined('IS_TRANSFORMATION_WRAPPER')) {
  74             if (strlen($table)) {
  75                 // SHOW TABLES doesn't show temporary tables, so try select
  76                 // (as it can happen just in case temporary table, it should be
  77                 // fast):
  78
  79                 /**
  80                  * @todo should this check really
  81                  * only happen if IS_TRANSFORMATION_WRAPPER?
  82                  */
  83                 $_result = PMA_DBI_try_query(
  84                     'SELECT COUNT(*) FROM ' . PMA_Util::backquote($table) . ';',
  85                     null,
  86                     PMA_DBI_QUERY_STORE
  87                 );
  88                 $is_table = ($_result && @PMA_DBI_num_rows($_result));
  89                 PMA_DBI_free_result($_result);
  90             }
  91
  92             if (! $is_table) {
  93                 include './db_sql.php';
  94                 exit;
  95             }
  96         }
  97
  98         if (! $is_table) {
  99             exit;
 100         }
 101     }
 102 } // end if (ensures table exists)
 103 ?>